Run: 2026-10-09-01M4G16VNDRZP8AAWPTAK9H7RH

Run Details

Duration:
15.7s
Cost:
$0.001214
Provider:
Claude Platform on AWS

Model input

System
You are an expert novelist with a gift for vivid, immersive prose. You write in tight third-person limited point of view with a strong narrative voice. Your prose is clean, precise, and engaging — you favor strong verbs, concrete details, and natural-sounding dialogue. You will be given a story bible (codex) containing canonical details about characters, locations, items, and lore. Use these details to ground your writing in the established world. Stay consistent with the codex. Write only the prose of the scene. Do not include titles, chapter headings, markdown formatting, or any commentary before or after the scene.
User/Human
<codex> <character id="4412" name="Aurora Carter" aliases="Rory, Laila, Aurora, Carter, Malphora" pronouns="she/her" species="Human" storyRole="Protagonist"> <eyeColor>bright blue</eyeColor> <hair>straight shoulder-length black</hair> <height>5'6"</height> <age>25</age> <scar>small crescent-shaped scar on her left wrist from a childhood accident</scar> <description>Aurora, referred to by her friends as Rory, is cool-headed, intelligent, and known for quick out-of-the-box thinking.</description> <backstory>Born in Cardiff to an Irish barrister father (Brendan Carter) and Welsh teacher mother (Jennifer Carter née Ellis), Rory reluctantly pursued Pre-Law at Cardiff University. She fled to London at the behest of her childhood friend Eva after leaving an abusive ex named Evan. By day, Rory works part-time as a delivery person for Yu-Fei Cheung's Golden Empress restaurant. She lives in a flat above Silas' bar.</backstory> </character> <location id="861" name="The Fae Grove" aliases="Isolde's grove, Richmond grove, the Grove" realm="Earth (Fae-touched)"> <parkLocation>Richmond Park</parkLocation> <standingStones>ancient oak standing stones mark the boundary</standingStones> <timeBehavior>time moves differently — an hour inside can be minutes or days outside</timeBehavior> <flora>wildflowers bloom year-round</flora> <description>A hidden clearing that exists in a pocket between Earth and the Fae realm.</description> </location> <item id="2001" name="Heartstone Pendant" aliases="the pendant, Heartstone" type="Artifact" origin="Dymas"> <gemstoneColor>deep crimson</gemstoneColor> <chainMaterial>silver chain</chainMaterial> <size>roughly the size of a thumbnail</size> <behavior>pulses faintly with warmth when near a Hel portal</behavior> <glow>faint inner glow</glow> <description>Given to Aurora by an unknown benefactor.</description> </item> </codex> Write a fully fleshed out scene of at least 1000 words in the horror genre. A character is alone in a strange, isolated place at night. They came here for a reason, but something feels off from the moment they arrive. The wrongness builds slowly — sounds that shouldn't be there, things that move at the edge of vision, a growing certainty that they are not alone. Build tension through restraint, not through gore. Use the codex entries above as your world reference for the character and setting. Only include the prose of the scene without any markdown or commentary.

Model response

AI
The path ended where the streetlamps gave up. Rory stood at the edge of the bracken with her hands buried in the pockets of her coat and listened to the park go quiet around her. Richmond at midnight should not have been this quiet. Somewhere behind her, beyond the tree line, a car hissed along the Robin Hood Gate road, and then even that sound thinned and vanished, as if someone had closed a door on it. She checked her phone. 11:52. She checked again a minute later, after she had counted to sixty twice under her breath, and it read 11:52 still. "Right," she said to nobody. Her voice sounded flat and small. "Fine." The note had been waiting in her delivery bag when she came off shift at the Golden Empress, tucked between a pair of chopstick sleeves and a receipt for spring rolls. Cream card, no envelope, handwriting so neat it looked typed. *Come to the grove before the frost. Bring what she gave you.* No signature. She had nearly thrown it in the bin behind Yu-Fei's kitchen. Instead she had stood in the alley for a full minute with the card in her fingers, and then she had gone home, sat on the edge of her bed above Silas' bar, and pulled the silver chain from the back of her drawer. The Heartstone pendant lay in her palm now, no bigger than her thumbnail, the crimson stone dark as wine. It had been warm for an hour. Not warm the way metal gets from a body; warm the way a cup of tea is warm in the second before you drink it, steady and patient. Since she'd stepped off the path, it had begun to pulse, faint and slow, like something breathing under a blanket. She closed her fingers over it and walked on. The grove announced itself by the stones. There were seven of them, or at least seven she could see, rising out of the ground in a rough ring between the oaks. They were not carved. They were not quite natural either. Their faces had been worn smooth by something other than weather, and the oaks that stood among them were older than any tree she had ever seen, their trunks split and furrowed like the knuckles of an old man. Between the roots, wildflowers grew. Foxglove. Blue speedwell. Clusters of pale yellow primrose, open wide and glowing as though it were June. It was late October. Frost had been on the windscreens that morning. Rory crouched and touched a primrose. The petals were cool and damp, real enough. She let her thumb rest against the stem and felt, beneath the skin of the plant, a faint tremor, like a pulse. Behind her, a twig snapped. She stood too fast and her knee cracked. She turned slowly, pendant clenched in her fist, scanning the trunks. Nothing. Only the stones, pale in the starlight, and the darkness pooling between the oaks like water. "Hello?" she said. The grove swallowed the word. No echo came back. She told herself it was a deer. Richmond had deer, great shouldering things that wandered out of the bracken without a sound. She told herself that as she took a step toward the nearest stone, and then another, and as she heard her own footfall come back to her a fraction late, as if the ground were repeating her steps after a moment's hesitation. She stopped. The repeated footfall stopped too. She waited. She counted. Four seconds, five, six. Then, very softly, from somewhere beyond the ring, a child began to hum. It was an old tune. Rory knew it, or half-knew it, the way you know a lullaby from a childhood you can't quite remember. The melody rose and fell, unhurried, and every few bars it broke off and started again from the beginning, as if the singer had lost the thread and was trying to find it. The sound moved. Once it was to her left, near the third stone. Then it was behind her. Then it seemed to be coming from the ground itself. Her pendant had stopped being warm. It was hot now, a dull pressure against her palm, pulsing in a rhythm that matched the humming and then, horribly, began to lead it. Rory opened her hand and looked at the stone. The crimson glow was brighter than it had been, a deep red light that seeped between her fingers and painted the veins of her wrist. The small crescent scar near her thumb looked white in that light, almost raised. Movement at the edge of her sight. Between the second and third oak, something pale slid behind a trunk. Not a deer. It had been too tall, and it had moved too smoothly, the way a reflection moves when you shift your head. She turned her eyes toward it and it was gone. She turned back to the stones and, from the corner of her vision, saw it again, standing exactly where it had been a moment before, closer now, unmoving, watching. She did not look directly at it. Some instinct older than thought told her that looking would be a kind of answer. "I came because I was asked to," she said, and was pleased that her voice did not shake. "I'm here. You can stop." The humming ceased. The silence that followed was total. Not a bird, not a leaf, not the faint hum of the city that had been there all her life. Even her heartbeat seemed to go quiet in her ears, leaving only the slow, patient pulse of the stone in her hand. Then, from directly behind her, close enough that she felt the breath move the hair at her neck, a voice she knew said her name. "Rory." It was Eva's voice. It was her own voice too, a half-second behind, the way the echo of her footsteps had been. She did not turn around. She stood very still, the Heartstone burning in her fist, and felt the grove lean inward around her, waiting to see what she would do.
created_at"2026-10-09T09:51:46.868Z" 10/9/2026, 9:51:46 AM
model"anthropic/claude-haiku-5.5-20261007"
app_id182717
external_user(null)
streamedtrue
cancelledfalse
latency3747
moderation_latency(null)
generation_time15639
tokens_prompt792
tokens_completion1614
native_tokens_prompt1172
native_tokens_completion2194
native_tokens_completion_images(null)
native_tokens_reasoning356
native_tokens_cached0
num_media_prompt(null)
num_input_audio_prompt(null)
num_media_completion0
num_search_results(null)
num_fetches(null)
web_search_engine(null)
origin"https://ncbench.com/"
is_byokfalse
finish_reason"stop"
native_finish_reason"end_turn"
service_tier"default"
usage0.0012142
router(null)
user_agent"langchainjs-openai/1.0.0 ((node/v24.21.0; linux; x64))"
http_referer(null)
request_id"req-1791539506-Ak6bJIMBe3c9WE637eyZ"
session_id(null)
preset_id(null)
api_type"completions"
id"gen-1791539506-MkIqqL1gT1Polz1kZzBR"
upstream_id"msg_011CfrTUqQuPsYFiUWfrZtcL"
provider_responses
0
endpoint_id"b6cdf493-3a61-441f-a134-e7944fddb980"
id"msg_011CfrTUqQuPsYFiUWfrZtcL"
is_byokfalse
latency1199
model_permaslug"anthropic/claude-haiku-5.5-20261007"
provider_name"Claude Platform on AWS"
status200
total_cost0.0012142
cache_discount(null)
upstream_inference_cost0
provider_name"Claude Platform on AWS"
response_cache_source_id(null)
data_region"global"
workspace_id"97e315e5-d303-487d-83c1-83180e8a13d4"

Evaluation details

Result Evaluator Details Meta Data
100.00% Adverbs in dialogue tags
Target: ≤10% dialogue tags with adverbs
totalTags4
adverbTagCount0
adverbTags(empty)
dialogueSentences6
tagDensity0.667
leniency1
rawRatio0
effectiveRatio0
80.45% AI-ism adverb frequency
Target: <2% AI-ism adverbs (58 tracked)
wordCount1023
totalAiIsmAdverbs4
found
0
adverb"slowly"
count1
1
adverb"very"
count2
2
adverb"softly"
count1
highlights
0"slowly"
1"very"
2"softly"
100.00% AI-ism character names
Target: 0 AI-default names (17 tracked, −20% each)
codexExemptions(empty)
found(empty)
100.00% AI-ism location names
Target: 0 AI-default location names (33 tracked, −20% each)
codexExemptions(empty)
found(empty)
46.24% AI-ism word frequency
Target: <2% AI-ism words (290 tracked)
wordCount1023
totalAiIsms11
found
0
word"pulse"
count3
1
word"furrowed"
count1
2
word"scanning"
count1
3
word"echo"
count2
4
word"footfall"
count2
5
word"silence"
count1
6
word"footsteps"
count1
highlights
0"pulse"
1"furrowed"
2"scanning"
3"echo"
4"footfall"
5"silence"
6"footsteps"
100.00% Cliché density
Target: ≤1 cliche(s) per 800-word window
totalCliches0
maxInWindow0
found(empty)
highlights(empty)
100.00% Emotion telling (show vs. tell)
Target: ≤3% sentences with emotion telling
emotionTells0
narrationSentences81
matches(empty)
54.67% Filter word density
Target: ≤3% sentences with filter/hedge words
filterCount1
hedgeCount4
narrationSentences81
filterMatches
0"know"
hedgeMatches
0"began to"
1"seemed to"
100.00% Gibberish response detection
Target: ≤1% gibberish-like sentences (hard fail if a sentence exceeds 800 words)
analyzedSentences84
gibberishSentences0
adjustedGibberishSentences0
longSentenceCount0
runOnParagraphCount0
giantParagraphCount0
wordSaladCount0
repetitionLoopCount0
controlTokenCount0
repeatedSegmentCount0
maxSentenceWordsSeen44
ratio0
matches(empty)
100.00% Markdown formatting overuse
Target: ≤5% words in markdown formatting
markdownSpans1
markdownWords12
totalWords1023
ratio0.012
matches
0"Come to the grove before the frost. Bring what she gave you."
100.00% Missing dialogue indicators (quotation marks)
Target: ≤10% speech attributions without quotation marks
totalAttributions4
unquotedAttributions0
matches(empty)
100.00% Name drop frequency
Target: ≤1.0 per-name mentions per 100 words
totalMentions15
wordCount994
uniqueNames11
maxNameDensity0.4
worstName"Rory"
maxWindowNameDensity1
worstWindowName"Rory"
discoveredNames
Robin1
Hood1
Gate1
Golden1
Empress1
Yu-Fei1
Heartstone2
June1
October1
Eva1
Rory4
persons
0"Empress"
1"Yu-Fei"
2"Heartstone"
3"Eva"
4"Rory"
places
0"Robin"
1"Hood"
2"Gate"
3"Golden"
globalScore1
windowScore1
100.00% Narrator intent-glossing
Target: ≤2% narration sentences with intent-glossing patterns
analyzedSentences56
glossingSentenceCount1
matches
0"quite remember"
100.00% "Not X but Y" pattern overuse
Target: ≤1 "not X but Y" per 1000 words
totalMatches0
per1kWords0
wordCount1023
matches(empty)
100.00% Overuse of "that" (subordinate clause padding)
Target: ≤2% sentences with "that" clauses
thatCount1
totalSentences84
matches
0"pleased that her"
100.00% Paragraph length variance
Target: CV ≥0.5 for paragraph word counts
totalParagraphs29
mean35.28
std31.35
cv0.889
sampleLengths
077
126
212
3110
474
59
6102
712
836
95
1036
113
129
1364
147
158
1613
1785
1831
1948
2082
2122
2223
233
2448
2525
261
2722
2830
92.27% Passive voice overuse
Target: ≤2% passive sentences
passiveCount3
totalSentences81
matches
0"been worn"
1"was gone"
2"was pleased"
100.00% Past progressive (was/were + -ing) overuse
Target: ≤2% past progressive verbs
pastProgressiveCount2
totalVerbs160
matches
0"were repeating"
1"was trying"
100.00% Em-dash & semicolon overuse
Target: ≤2% sentences with em-dashes/semicolons
emDashCount0
semicolonCount1
flaggedSentences1
totalSentences84
ratio0.012
matches
0"Not warm the way metal gets from a body; warm the way a cup of tea is warm in the second before you drink it, steady and patient."
99.04% Purple prose (modifier overload)
Target: <4% adverbs, <2% -ly adverbs, no adj stacking
wordCount219
adjectiveStacks0
stackExamples(empty)
adverbCount9
adverbRatio0.0410958904109589
lyAdverbCount1
lyAdverbRatio0.0045662100456621
100.00% Repeated phrase echo
Target: ≤20% sentences with echoes (window: 2)
totalSentences84
echoCount0
echoWords(empty)
100.00% Sentence length variance
Target: CV ≥0.4 for sentence word counts
totalSentences84
mean12.18
std10.24
cv0.841
sampleLengths
08
127
29
333
44
51
621
75
86
91
1031
1110
127
137
1411
1544
1619
177
1828
1920
209
217
2224
234
246
2539
265
271
282
2914
304
318
326
338
3422
355
368
3711
381
3916
403
415
424
437
4415
4542
462
475
482
492
53.41% Sentence opener variety
Target: ≥60% unique sentence openers
consecutiveRepeats14
diversityRatio0.42168674698795183
totalSentences83
uniqueOpeners35
100.00% Adverb-first sentence starts
Target: ≥3% sentences starting with an adverb
adverbCount9
totalSentences73
matches
0"Somewhere behind her, beyond the"
1"Instead she had stood in"
2"Only the stones, pale in"
3"Then, very softly, from somewhere"
4"Once it was to her"
5"Then it was behind her."
6"Then it seemed to be"
7"Even her heartbeat seemed to"
8"Then, from directly behind her,"
ratio0.123
66.58% Pronoun-first sentence starts
Target: ≤30% sentences starting with a pronoun
pronounCount28
totalSentences73
matches
0"She checked her phone."
1"She checked again a minute"
2"she said to nobody"
3"Her voice sounded flat and"
4"She had nearly thrown it"
5"It had been warm for"
6"She closed her fingers over"
7"They were not carved."
8"They were not quite natural"
9"Their faces had been worn"
10"It was late October."
11"She let her thumb rest"
12"She stood too fast and"
13"She turned slowly, pendant clenched"
14"She told herself it was"
15"She told herself that as"
16"It was an old tune."
17"Her pendant had stopped being"
18"It was hot now, a"
19"It had been too tall,"
ratio0.384
100.00% Subject-first sentence starts
Target: ≤72% sentences starting with a subject
subjectCount52
totalSentences73
matches
0"The path ended where the"
1"Rory stood at the edge"
2"Richmond at midnight should not"
3"She checked her phone."
4"She checked again a minute"
5"she said to nobody"
6"Her voice sounded flat and"
7"The note had been waiting"
8"Cream card, no envelope, handwriting"
9"She had nearly thrown it"
10"The Heartstone pendant lay in"
11"It had been warm for"
12"She closed her fingers over"
13"The grove announced itself by"
14"They were not carved."
15"They were not quite natural"
16"Their faces had been worn"
17"Clusters of pale yellow primrose,"
18"It was late October."
19"Frost had been on the"
ratio0.712
0.00% Subordinate conjunction sentence starts
Target: ≥2% sentences starting with a subordinating conjunction
subConjCount0
totalSentences73
matches(empty)
ratio0
61.22% Technical jargon density
Target: ≤6% sentences with technical-jargon patterns
analyzedSentences35
technicalSentenceCount4
matches
0"Their faces had been worn smooth by something other than weather, and the oaks that stood among them were older than any tree she had ever seen, their trunks sp…"
1"Clusters of pale yellow primrose, open wide and glowing as though it were June."
2"She told herself that as she took a step toward the nearest stone, and then another, and as she heard her own footfall come back to her a fraction late, as if t…"
3"It was hot now, a dull pressure against her palm, pulsing in a rhythm that matched the humming and then, horribly, began to lead it."
100.00% Useless dialogue additions
Target: ≤5% dialogue tags with trailing filler fragments
totalTags4
uselessAdditionCount0
matches(empty)
100.00% Dialogue tag variety (said vs. fancy)
Target: ≤10% fancy dialogue tags
totalTags3
fancyCount0
fancyTags(empty)
dialogueSentences6
tagDensity0.5
leniency1
rawRatio0
effectiveRatio0
88.4627%